OMAPL138如何在Linux下使用EDMA3驱动

yyj

$ t* Q6 g0 t# {6 S3 D! ?

1. [code]EDMA sample test application
   * p5 J# `8 m. X3 G
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   6 K. Q& v! V9 @( i
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   4 V( K5 l, |7 A1 R; m) }/ u; t
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
      @" d4 |& A( ?* k
11. *         TO CHANGE.
    9 X; w$ J$ {: A$ `1 [  `
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    5 g9 g- Y! p- c& V: D5 ~. o# c! X; H
14. *
    $ g7 c. \/ Z' q+ A+ [) Z/ l, L
15. * This program is free software; you can redistribute it and/or
    - s, Y) A6 n8 i: L! }% U: {
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
      S7 T6 I0 [; B. e" m/ b
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    3 t8 K$ i8 ^, W6 {; r4 W: v; b# j
22. * GNU General Public License for more details.
    
23. */
    5 {. @/ l% x: s6 s0 _
24. 
    7 f8 A) u8 B8 p2 f/ \. U2 D
25. #include <linux/module.h>
    + H/ y! H- G/ n  O4 f7 U
26. #include <linux/init.h>
    9 n/ ?/ H5 _* H
27. #include <linux/errno.h>
    5 y8 C9 |3 _3 S# P, f" p0 X' T4 a
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    $ X, r* }; T1 A- N3 V8 Q! i9 W7 `
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    : q- v7 Z$ T% ]- t
32. #include <linux/sysctl.h>
    ( x% z, A9 X3 p) F7 B! h) k5 I7 \) F
33. #include <linux/mm.h>
    * R5 x6 D% Q# z4 A. s+ ]
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    0 @! P9 d( V  j$ z  O8 @6 @. C
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
      C, ^# |2 s; o# B; M) N
43. 
    
44. #ifdef EDMA3_DEBUG
    ! e# L# V9 f- D- d
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ) O2 \2 C8 ~' l7 D# K) I
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    " H; n  d4 ]; D; \5 |
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    4 X6 m) S% u. C; ]
48. #else
    6 g, b! R2 E8 b8 G/ o- i% T
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    / @. }- l9 e& Y$ s, `
51. #define DMA_FN_OUT
    2 }7 o( @, j+ _8 [6 v$ E% d, w
52. #endif
    % j, N2 V" }/ s2 g
53. 
    - l' T! F5 Q; `1 W, n" ]
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    6 Y3 X9 l- a1 T- |- Y0 r4 i
55. #define STATIC_SHIFT                3
    # D$ I  _/ x( B' l. m. Y$ C7 V
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ; W6 [3 W% }% v# {- S
60. 
    : z( S3 p6 f) F  U$ g& y& z
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    " \1 C) C9 V9 o5 Z& W9 q3 g- S
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    , ^  V/ C9 c1 ]$ ^
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    5 a8 n/ H5 j/ L
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    & G! y" l  A4 v7 [
72. 
    % P' u& o" N. Z0 X' K3 N
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    . r6 @3 ~: h8 t7 ~
76. char *dmabufdest2 = NULL;
      m  o& c/ s9 z$ E* I& n" \5 ^
77. 
    5 q  {# a3 Q8 c3 @% v6 d5 v7 s
78. static int acnt = 512;
    % B( `8 T( W: p0 v* r
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    8 J9 {% l0 C2 [8 H- c4 D
81. 
    
82. module_param(acnt, int, S_IRUGO);
    , Y% J. Q" }& X3 E* }
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

* h2 O$ l9 }- }; m) e      这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
7 w' {- h1 E' Xarm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
% e* b4 m% l5 e& i
4 N/ N1 Q% D& M! D4 X
. r0 m' m8 l4 L2 m. w. {